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Unformatted text preview: _, wwv— . ' Survey Project #2 Explanatory variable, quantitative: How many hours a night do you sleep? Response variable, quantitative: How many hours a week do you workout? Hours of Sleep/Night gX) Hours working out/Week t I )
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7 7
’ 6 12
8 6
8 16
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6 5
6 y  4
Mean = 7  ‘ Mean = 6.8
SD. ~ 0.818 ' S.D. ~ 4.237
R ~ 0.128 ' ' ' Regression Equation: y = 0.663x + 2.159 The scatterplot has a very weak, positive association. “r” is not very close to 1, so
the correlation between hours of sleep per night and hours working out per week is not
strong. From my. data, you can see that several of my subjects got the same hours of
sleep, but did not work out the same amount of hours. There are many lurking variables
in this of survey; for example, age, weight, energy level, stress, and motivation. After
looking over my scatterpolot and my data, I have concluded that there is not a strong relationship between my two variables. You have my permission to post my report on the iLearn site and to publish it as an example of student work. :.. .1!!! .wﬂmlw ....... x 15.1.: :. ‘ )1}; v, ‘1 .1: ,v 5‘ w
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 Spring '08
 Staff
 Statistics, Probability

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